smoke-roasted stuffed bell peppers

INGREDIENTS

• 2 medium red bell peppers
• 3 medium mixed bell peppers (orange, yellow, green)
• 3/4 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 3 tablespoons butter
• 1 onion, finely chopped
• 2 cloves garlic, minced
• 1 medium zucchini, cut into 1/4-inch dice
• 1 medium yellow squash, cut into 1/4-inch dice
• 2 cups fresh or frozen corn kernels (from 3 to 4 ears of corn; for extra flavor, once you’ve cut the kernels off, use the dull side of your knife blade to scrape the remaining corn and juices, or “milk” from the cob)
• 1 medium tomato, seeded and cut into 1/4-inch dice
• 2 tablespoons chopped fresh herbs (such as parley, oregano, basil or a mix)
• 1/4 cup plain dried breadcrumbs
• Oil for coating grill grate
• 2 tablespoons grates Parmesan cheese (optional)